Ms. Saraswathi Chirakkara Profile

Saraswathi Chirakkara

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Proceedings Article | 15 October 2012 Paper

Tuning the photoluminescence of ZnO thin films by indium doping

Saraswathi Chirakkara, S .B. Krupanidhi

Proceedings Volume 8549, 85492U (2012) https://doi.org/10.1117/12.927412

KEYWORDS: Zinc oxide, Indium, Thin films, Doping, Raman spectroscopy, Luminescence, Zinc, Boron, Silicon, Excitons

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Zinc Oxide (ZnO) and indium doped ZnO (IZO) thin films with different indium compositions were grown on p-type boron doped Si substrates by pulsed laser deposition (PLD). The effect of indium concentration on the structural, optical and electrical properties of the film was studied. XRD, XPS and Raman studies confirm the single phase formation and successful doping of In in to ZnO. We observed various photoluminescence emissions, ranging from UV to visible, with the incorporation of In into ZnO. Room temperature Current-Voltage (I-V) characteristics showed good p-n junction properties for n-type-undoped and In doped ZnO with p-type substrates. The turn on voltage was observed to be decreasing with increase in In composition.

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